Photographic-plate clip.



Patented May 29, I900.

5. T. SCHOONMAKEB.

PHOTOGRAPHIC PLATE CLIP.

Application filed Aug. 18, 1899.)

(No Model.)

m: NORRIS PETERS 00.. PHOTO L|THO.. WASHINGTON. 0,12.

UNITED STATES PATENT Fries.

hDlVARD T. SCIIOONMAKER, OF NFHV YORK, N. Y.

PHOTOGRAPHlC-PLATE CLIP.

SPECIFICATION forming part of Letters Patent No. 650,660, dated May 29,1900.

7 Application filed August 18, 1899. $erial No. 727,626. (No model.)

To aZZ whom it may concern:

Be it known that I, EDW'ARD T. SCHOON- MAKER, a citizen of the UnitedStates, residing in the city of New York, (Fordham,) county and State ofNewYork, have invented an Improvement in Holders for PhotographicPlates, of which the following is a specification.

Devices of various kinds have heretofore been employed for holdingphotographic plates d urin gdevelopmen t,so as to prevent the fingers ofthe operator becoming stained by contact with the developing chemicals.Most of these devices fail to hold the plate with any degree of safety,while others tend to obscure the view of the developing image.

My invention is adapted to engage the photographic plate at one edge andto grip the same at two adjacent places, and in carrying out myinvention I use a frame and a springactuated spanner moving in a planeparallel to the frame and in guides made thereon. The ends of the frameand the adjacent opposing ends of the spanner form jaws to engage theedge of the plate.

In the drawings, Figure 1 is an elevation; Fig. 2, a plan view, and Fig.3 an edge view showing the holder in position upon a plate.

The frame a is of inverted-V shape, and it is provided with projectingtapering ends a, wit-h a finger-lug a with guides 3 4, and a guide-barb. The spanner c is provided with a stem 0' and with a finger-lug 0 withprojections 5, and with tapering ends e e, which are adjacent andopposite to the tapering ends a of the frame.

The stem 0 slides through the guide-bar b, and between the guides 3 4and around said stem, between the guides 3 4 and the projections 5, is ahelical spring d, whose office is to force the tapering ends e 6 towardthe tapering ends a of the frame, and said tapering ends are separatedagainst the action of the spring, so as to receive between them the edgeof the photographic plate by the action of the fingers against thefinger-lugs a 0 I do not limit myself to the peculiar outline of theholder, as the same might be varied without departing from thestructural features or operation of the device.

The tapering ends a of the frame and e e of the spanner occupy an obtuseangle to the plane of the frame and spanner, so that when the holder ison the photographic plate it is not at right angles thereto, but at anobtuse angle thereto, which more nearly agrees with the angle of thesides of the developing-tray and which at the same time does notinterfere with a full and complete view of the p110- tographic platewhen the same is raised by the holder to view the developing image.

The base of the frame a adjacent to the tapering ends a is preferablymade with a receding curved portion a to permit the ad vancing edge ofthe photographic plate to pass back of the tapering ends 6 e to increasethe leverage of the holder and bring the point of contact of the ends ee away from the edge of the plate to lessen the liability of breakage orchipping the edge of the glass.

I claim as my inventionl. A holder for photographic plates comprisingaframe having projecting tapering portions at one end, an intermediateguide and a finger-lug at the other end, a spring and a spanner actuatedthereby and in the same plane as the frame and having project ingtapering ends adjacent to the tapering ends of the frame and afinger-lug adjacent to the tapering ends so that the finger-lugs come atopposite ends of the holder and opposite sides of the spring,substantially as specified.

2. A holder for photographic plates, comprising a frame, two projectingtapering ends, guides and a guide-bar and a finger-lug formed upon saidframe, a spanner and a stem therefor in the same plane as the frame andmoving through the guide-bar and guides of the frame, the spanner havinga finger-lug and tapering ends adjacent to the tapering ends of theframe and a helical spring around the stem of the spanner for actuatingthe same, substantially as set forth.

3. A holder for photographic plates, com

prising an inverted-V-shaped frame with two projecting tapering ends atan obtuse angle to the frame, a finger-lug at the end opposite to thetapering ends, two guides and a guidebar, a spanner having tapering endsadjacent and in opposition to the tapering ends of the frame, a stem anda finger lug and projections integral with the spanner, the stem movingthrough the guide-bar and guides of the frame, and a helical springaround the stem between the projections thereof and the guides of theframe for actuating the spanner, substantially in the manner and for thepurposes set forth.

4. A holder for photographic plates, comprising an inverted-V-shapedframe with two projecting tapering ends at an obtuse angle to the frameand a receding curved portion adjacent thereto, a finger-lug at the endopposite t0 the tapering ends, two guides and a guide-bar, a spannerhaving tapering ends adjacent and in opposition to the tapering ends ofthe frame, a stem and a finger-lug and EDYVARD T. SCIIOONMAKER.

YVitnesses:

GEO. T. PINOKNEY, S. T. IIAVILAND.

